Chemical Admixture System for Pervious Concrete

Pervious concrete contains a high void content that allows for the passage of water and is often used in pavements to reduce storm water runoff and ponding, improve water quality, and recharge groundwater. Successful pervious concrete for pavement applications must be quickly discharged from a ready mixed concrete truck, achieve consistent compaction without paste draining to the bottom of the pavement, allow sufficient time before the application of curing, and achieve adequate strength of durability. Obtaining these properties requires unique paste rheology and setting characteristics, which are enabled through the proper selection of chemical admixtures. In this paper, novel lab tests are used to quantify the effects of individual admixtures; namely a retarder, polycarboxylate-based high-range water-reducer, and bio-gum type viscosity modifying admixture. The benefits of using a combination of these three admixtures are demonstrated.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780870313370
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Koehler, Eric P
  • Offenberg, Matthew
  • Malone, James
  • Jeknavorian, Ara A
• Conference:
  • Ninth ACI International Conference on Superplasticizers and Other Chemical Admixtures
  • Location: Seville , Spain
  • Date: 2009-10-13 to 2009-10-17
• Publication Date: 2009

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 273-286
• Monograph Title: Superplasticizers and other Admixtures in Concrete

Subject/Index Terms

• TRT Terms: Admixtures; Concrete; Durability; Groundwater; Porous pavements; Runoff; Void ratios; Workability
• Uncontrolled Terms: Viscosity modifying admixtures
• Subject Areas: Highways; Materials; Pavements; I32: Concrete;

Filing Info

• Accession Number: 01159932
• Record Type: Publication
• ISBN: 9780870313370
• Report/Paper Numbers: SP-262-20
• Files: TRIS
• Created Date: Jun 30 2010 6:53AM